Improving Vigor in shrunken-2 Corn Seedlings
نویسندگان
چکیده
منابع مشابه
Experiments on Hybrid Vigor and Convergent Improvement in Corn'
Page Introduction.._ 1 The breeding program 3 Selection in back-pollinated lines 4 Greenhouse selection 5 Experiments on back pollinating and recrossing 7 Growing seed for the experiments 8 Methods ©(comparing yields 9 Experiments on back pollinating and recrossing—Continued. Experimental data --. 10 Discussion 17 Relation to the theory oí hybrid vigor... 18 Relation to corn breeding19 Summary ...
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Five-day-old seedlings of corn (Zealpha mays L.) grown without nitrate were decapitated and exposed to 0.5 mm KNO(3) or 0.5 mm KCl in aerated solutions at 30 C. Uptake of nitrate, chloride, and potassium was determined by replacing solutions hourly and measuring their depletion. Translocation of these ions and of organic nitrogen was determined by hourly analysis of the vascular exudate. Nitrat...
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S-Adenosylmethionine decarboxylase (EC 4.1.1.50) has been purified 500-fold in 30% yield from the extract of etiolated corn seedlings (cv. Golden Crossbantam Bell). This preparation had a molecular weight of approximately 25,000. The K(m) value was 5 micromolar for S-adenosylmethionine. Methylglyoxal bis(guanylhydrazone), hydroxylamine, and sulfhydryl reagents (such as p-hydroxymercuriphenylsul...
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Seedlings of corn (Zea mays) were tested for recovery from chilling injury incurred at 0.3 +/- 0.3 C. At 0.3 C visual leaf injury appeared in 36 hours, whereas stem and root injuries appeared later. Appearance of leaf injury was preceded by a rise in O(2) uptake and a lessened effect of 2,4-dinitrophenol on O(2) uptake by leaf segments and was accompanied by increased ion leakage from the leave...
متن کاملNucleotide & ribonucleic acid metabolism of corn seedlings.
The consideration of nucleotides and ribonucleic acid (RNA)2 in metabolism has become increasingly imiiportant in cellular biology during the past few years. The commonly occurring nucleotides of -wheat and corn plants have been identified by BergkN-ist (1) and Cherry and Hageman (3), respectively. The latter have shown that the nucleoside diand trip)hosphates in etiolated corn embryos shift to...
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ژورنال
عنوان ژورنال: Journal of the American Society for Horticultural Science
سال: 1996
ISSN: 0003-1062,2327-9788
DOI: 10.21273/jashs.121.6.1069